... Spherical aberration, coma, and astigmatism are also easily observed using the star test. ... Off-axis images are complex. ... Fig. ... Diffraction by a circular aperture as a function of defocus for no aberration Airy Disk 1 wave defocus Less than 1 wave defocus Fig. ... Diffraction by a circular aperture as a function of defocus for third-order spherical aberration Paraxial Focus Small distance inside paraxial focus Moderate distance from marginal focus Immediate neighborhood of marginal focus Fig...

... part 2 | ... Part 1 . The new concept of formation and development of the Solar system. ... Thus, the initial pulse of the rotation of a protosolar cloud of the solar system was determined as a result of the diversion of a part of the moment of the rotational pulse of the Galaxy. ... Besides this new approach to the pre-solar system as a system of the destroyed vortex structure, we can understand now a number of other peculiarities of the Solar system's structure. ...

... учитель информатики и информационных технологий, . ... В последние годы в нашем Центре были проведены эксперименты по использованию офисных информационных технологий для изучения астрономии в 11 классе. ... В проектной работе было решено использовать возможности процессора презентаций Power Point, который превращает введенную текстовую и числовую информацию в профессионально выполненные слайды, наполненные диаграммами, таблицами, графическими иллюстрациями, звуковыми фрагментами. ...

... In 1930, Trumpler noticed that linear diameters (LD) of open clusters increase with distance (D) from the Sun. ... Since that time, the interstellar absorption has become one of the best studied factor in astrophysics, and we may hope that current OCL distance scales are free from this LD-D correlation. To verify if this is the case we have chosen several modern OCL distance scales and test them with the same clusters and the same angular diameters that Trumpler had used back in 1930. ...

... Астрофорум - астрономический портал ? ... Астрономическое оборудование и аксессуары (Модераторы: zlyden , Denk36 ) ? Бюджетная камера от Point Grey Research . ... 01.12.2008 [20:39:07] ? ... Цитата: S.Fire от 01.12.2008 [21:26:02] Мне эта камера кажется достаточно перспективной. ... Цитировать The Chameleon camera, part number CMLN-13S2M/C-CS (mono/color), is priced at USD $375 (single quantity) and is available now from Point Grey Research and its network of distributors. ...

... The Science Operation Department is composed of Astronomers, Telescope Instruments Operators(TIOs) and Data Handling Administrators(DHAs). ... Astronomers have proposed several methods to quantitatively measure the amount of turbulence above the telescope, which the most common ones is Differential Image Motion Monitor (DIMM). In optical testing, the Hartmann test is the common method to test the quality of optical components. ... Hartmann mask consists of 48 lenses. ...

Introduction The suggested invention relates to attitude control system of a spacecraft. ... Systems without interaction with ambient (Systems with jet engines) Here, for instance, we can put systems, which can generate torque because of jettisoning any particles or gas. ... The main element of the suggested attitude control system is an electrical motor, which main feature is absents of a stator. ... 3 Block diagram of an attitude control system on a jet engines base. ... It is a system with| | ...

The 2dF QSO Redshift Survey (2QZ) . ... Before jumping into all the finer details of teh survey, a brief non-astronomer's guide to redshift surveys is available. ... The primary scientific aims of the QSO survey are: (1) to obtain the primordial fluctuation power spectrum out to COBE scales, (2) to determine the rate of QSO clustering evolution in the non-linear and linear regimes and hence obtain new limits on the value of and the bias parameter, (3) to apply a powerful geometric method to measure . ...

Preliminary results of astroclimate parameters measurements at the Sternberg 2.5m telescope installation site V.Kornilov, N.Shatsky, S.Potanin, O.Voziakova, B.Safonov Moscow, 2008 Acknowledgements A.Belinskiy M.Kornilov A.Tokovinin M.Kuznetsov P.Kortunov E.Gorbovskoy SAI administration some SAI students Pulkovo solar station (KHSS) staff RFBR support MAVEG Gmbh Why to study optical turbulence and some other relevant ... Mean seeing by DIMM data for this night is 1''5. ...

... Родилась 24 апреля 1959 года в Вест-Пойнте (West Point), штат Нью-Йорк. ... В 1981 году получила степень бакалавра искусств (биохимия) в Университете Сан-Франциско (San Francisco State University). ... В апреле 1988 года закончила подготовку по аэрокосмической медицине (летный хирург) в Школе аэрокосмической медицины (School of Aerospace Medicine) на базе ВВС Брукс (Brooks Air Force Base) в Техасе. ... С 1994 по 1996 год работала заместителем руководителя проекта в Kelsey-Seybold Clinics. ...

... Space flight . ... On-line Data . ... a - defines the size of the orbit . ... i - defines the orientation of the orbit with respect to the Earth's equator . defines where the low point, perigee, of the orbit is with respect to the Earth's surface . ... defines where the satellite is within the orbit with respect to perigee . Info / On-line data: General description Position J-Track J-Track 3D Explanation . Info: Industry news On-line Data Company ATLAS news Events We in press Contact . ...

. Field of research interest . Telecommication networks and systems , Programming. Scientific Degree . Student of MIPT. Position . Laboratory assistant of IKI. Department Number . 902 (Space Monitoring Information Support) . Postal Address . Space Research Institute . Russian Academy of Sciences . Profsoyuznaya St. 84/32 . Moscow, RUSSIA . Postal Code . 117810 . Telephone Number . +7(095) 333-53-13 . E-mail . andrew@d902.iki.rssi.ru . If you want to get more information click here

... Average effective wavelengths and band widths for various sp ectra Lyrae spectrum f flat k е 1014 Hz 5386 ± 18 4.66 ± 0.04 5714 ± 12 4.1 6234.5 ± 0.5 1.03 5372 ± 18 4.69 ± 0.04 eff 2 Optical Filter ID 1 2 3 4 a Fo c -6 10 erg/cm2 s 12.55 ± 0.10 11.04 ± 0.01 2.77 ± 0.004 12.63 ± 0.10 fo d 6 10 photons/cm2 s 3.40 ± 0.02 3.18 ± 0.004 0.87 ± 0.002 3.42 ± 0.02 Power-law eff f 2 е 5746 ± 317 6197 ± 253 6305 ± 31 5736 ± 316 spectra pl k 1014 Hz 3.70 ± 0.26 3.14 ± 0.16 0.88 ± 0.01 3.70 ± 0.27 Table 1. ...

Journal of the Amateur Astronomers Association of New York May 2008 Volume 56 Number 5, ISSN 0146-7662 EYEPIECE -priority Hubble Space Telescope. ... Not one to rest on his laurels, M a t h er d escr ib ed his work as senior project scientist and chair of the Science Working Group of the upcoming James Webb Nobel continued on page 5 REMINDER--The AAA's annual meeting is May 21. ... May 5 New Moon at 8:18 a.m.; Moon at perigee, 222,309 miles from Earth, 1:18 p.m.; Eta Aquarid meteor shower peaks. ...

Download Izmccd (~2.7 MB). ... a) a choice of the best mode of measurements of stars and objects ("Properties/Measurement"), . b) a choice of reference stars. ... 1) necessity of presence on an image of a plenty of stars (we recommend to apply this mode, if on the frame of reference stars is more 100) . ... Sx and Sy depend from residuals at all reference stars (reference stars are marked by blue color). ... These residuals are the image of the star a minus function of a profile for each pixel. ...

... We thank the Swift team for their rapid scheduling of this observation. ... 2455705.20851 V 14.15 0.03 2455707.83079 V 14.10 0.03 2455710.84028 V 13.53 0.02 2455713.64631 V 13.66 0.02 2455714.65479 V 14.11 0.03 2455714.71823 V 14.12 0.02 2455714.78596 V 14.20 0.02 2455717.39593 V 14.37 0.03 2455726.62861 V 14.83 0.04 2455727.16343 V 14.57 0.04 2455730.50586 V 14.57 0.03 2455730.57329 V 14.56 0.03 2455730.70360 V 14.66 0.04 2455738.32865 V 14.00 0.02 2455742.86146 V 14.21 ...